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・ BPI-DOST Science Awards
・ BPIFA3
・ BPIFB1
・ BPIFB4
・ BPitch Control
・ BPK PENABUR
・ BPL
・ BPL (complexity)
・ BPL (time service)
・ BPL Group
・ Bplats
・ BPM
・ BPM (band)
・ BPM (magazine)
・ BPM (Sirius XM)
BPM (time service)
・ BPM 37093
・ BPM Energy
・ BPM Everywhere
・ BPM Racing
・ Bpm'online CRM
・ BPM-1
・ BPM-97
・ BPMC
・ BPN
・ BPO
・ BPO security
・ BPO standards and guidelines
・ BPOE Elks Club (Little Rock, Arkansas)
・ Bpost


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BPM (time service) : ウィキペディア英語版
BPM (time service)
BPM is the call sign of the official short-wave time signal service of the People's Republic of China, operated by the Chinese Academy of Sciences, broadcasting from CAS's National Time Service Center in Pucheng County, Shaanxi at , roughly 70 km northeast of Lintong, along with NTSC's long-wave time signal BPL on 100 kHz.
BPM is broadcast at 2.5, 5.0, 10.0, and 15.0 MHz, the same frequencies as WWV and WWVH, following the schedule listed below:〔(【引用サイトリンク】 url = http://www.time.ac.cn/center/222.html )
== Transmission format ==

BPM transmits different signals on a half-hour schedule, modulated with 1 kHz audio tones to provide second and minute ticks:
BPM is idiosyncratic in that it transmits UT1 time between minutes 25 through to 29 and 55 through to 59, which creates an odd click-beep effect when heard below a stronger time signal station such as WWV.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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